Safari Causing Problems with Siriux Theme

Hello I am using a slightly modified version of the Siriux theme. The problem occurs only in Safari where when a user mouses over any of the three album images the Tuna link and words disappear. Also the thumbnail image becomes slightly cut off. Any ideas what could be causing this?

Here is a link to the page: http://www.mssaannapolis.com/photo_gallery/main.php

Attached is a jpg of what it looks like when the Tuna link and words disappear. It works great in every other browser.

Any help is greatly appreciated.